Classification of Haigerachite |
| IMA status: | Approved |
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| Strunz 8th edition ID: | 7/C.21-30
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| Nickel-Strunz 10th (pending) edition ID: | 8.CF.10
8 : PHOSPHATES, ARSENATES, VANADATES C : Phosphates without additional anions, with H2O F : With large and medium-sized cations, RO4:H2O > 1:1 |
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Type Occurrence of Haigerachite |
| Type Locality: | Silberbrünnle Mine, Haigerach valley, Gengenbach, Black Forest, Baden-Württemberg, Germany |
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Physical Properties of Haigerachite |
| Lustre: | Vitreous |
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| Hardness (Mohs): | 2 |
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Crystallography of Haigerachite |
| Crystal System: | Monoclinic |
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| Class (H-M): | 2/m - Prismatic |
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| Space Group: | B2/b (B1 1 2/b) [C2/c] {C1 2/c 1} |
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| Cell Parameters: | a = 16.95Å, b = 9.59Å, c = 17.57Å β = 90.85° |
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| Ratio: | a:b:c = 1.767 : 1 : 1.832 |
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| Unit Cell Volume: | V 2,855.70 ų (Calculated from Unit Cell) |
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| Z: | 4 |
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Optical Data of Haigerachite |
| Type: | Biaxial (-) |
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| RI values: | nα = 1.557 nβ = 1.598 nγ = 1.602 |
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| Maximum Birefringence: | δ = 0.045
 Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
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| Surface Relief: | Moderate |
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| Dispersion: | relatively weak |
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Chemical Properties of Haigerachite |
| Formula: | |
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| Essential elements: | Fe, H, K, O, P |
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| All elements listed in formula: | Fe, H, K, O, P |
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Relationship of Haigerachite to other Species |
| Related Minerals - Nickel-Strunz Grouping): | | 8.CF.05 | Grischunite | | | 8.CF.05 | Wicksite | | NaCa | | (Fe | | ,Mn | | ) | | MgFe | | [PO | | ] | | · 2H | | O |
| | 8.CF.05 | Bederite | | NaCa | | (Mn | | ,Mg,Fe | | ) | | Mn | | (Fe | | ,Mg | | ,Al) | | [PO | | ] | | · 2H | | O |
| | 8.CF.05 | Tassieite | | (Na,[ ])Ca | | (Mg,Fe | | ,Fe | | ) | | (Fe | | ,Mg) | | (Fe | | ,Mg) | | [PO | | ] | | · 2H | | O |
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Other Names for Haigerachite |
| Synonyms: | |
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| German names: | |
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| Spanish names: | |
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Other Information |
| Health Warning: | No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care. |
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References for Haigerachite |
| Reference List: | Walenta, K. and Theye, Th. (1999): Haigerachit, ein neues Phosphatmineral von der Grube Silberbrünnle bei Gengenbach im mittleren Schwarzwald. Aufschluss, 50, 1-7. (in German).
Waerstad, K. R. & Frazier, A. W. (1987): X-ray powder diffraction and single-crystal data for the isomorphous series (Fe,Al)3(K,NH4,H3O)H14(PO4)8.4H2O. Powder Diffraction 2, 187-190.
Anisimova, N., Chudinova, N. & Serafin, M. (1997): Preparation and crystal structure of potassium iron hydrogen phosphate KFe3(HPO4)2(H2PO4)6.4(H2O). Zeitschrift für Anorganische und Allgemeine Chemie 623, 1708-1714.
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Internet Links for Haigerachite |
| Search Engines: |
Look for Haigerachite on Google
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| External Links: | Look for Haigerachite on WebmineralLook for Haigerachite on Athena MineralogyLook for Haigerachite on WikipediaLook for Haigerachite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Haigerachite in the Natural History Museum (London) online catalogueHaigerachite details from Handbook of Mineralogy (PDF) |
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Localities for Haigerachite |